An Act to amend an Act passed in the Fifty-fifth Year of His present Majesty, for granting to His Majesty the Sum of Twenty thousand Pounds towards repairing Roads between London and Holyhead by Chester, and between London and Bangor by Shrewsbury; and for giving additional Powers to the Commissioners therein named, to build a Bridge over the Menai Straits, and to make a new Road from Bangor Ferry to Holyhead, in the County of Anglesea.